Method of extracting contour of tomogram, and computer-readable storage medium and apparatus therefor

摘要

Contour information is extracted from nuclear medicine projection data on a subject not subjected to a scattering correction and an absorption correction by performing a pixel value binarization processing based on a threshold scheme. If necessary, an interpolation processing is performed before reconstructing an image through an image reconstruction processing. Based on the reconstructed image, a second binarization processing is performed to generate a contour image.

主权项

1. A computer-implemented contour image forming method that generates a contour image from projection data on a subject, comprising:
acquiring a projection data set of nuclear medicine images collected over a collection angle range of 0° to 180° or more; generating a sinogram from said acquired projection data set that is uncorrected for scatter; performing a first binarization processing on the generated sinogram; reconstructing an image by back projection of said sinogram subjected to said first binarization processing; and performing a second binarization processing on the reconstructed image to generate the contour image.